Last updated: June 24, 2025
In Sierra Blanca, United States, the average temperature in December is a cool 9°C (48°F), with a marked range where the minimum can dip to -6°C (21°F) and the maximum can rise to a pleasant 24°C (76°F). Be prepared for some light showers, as the precipitation amount typically reaches 15 mm (0.6 in) over 2 days. Additionally, with an average humidity of 87%, don't forget to dress accordingly for that extra moisture in the air!
In December, in Sierra Blanca, the average temperature is 9°C (48°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as -6°C (21°F). This variability in temperature makes Sierra Blanca a destination where travelers should be prepared for a range of weather conditions.
In Sierra Blanca in December, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.
In Sierra Blanca in December humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.
In Sierra Blanca in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sierra Blanca.
UV Risk Categories
Weather in Sierra Blanca varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sierra Blanca, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (46°F) | 9 mm (0.4 inches) | 81% | moderate |
| February Weather | 10°C (50°F) | 12 mm (0.5 inches) | 77% | very high |
| March Weather | 15°C (59°F) | 18 mm (0.7 inches) | 65% | very high |
| April Weather | 19°C (67°F) | 6 mm (0.2 inches) | 53% | extreme |
| May Weather | 24°C (75°F) | 7 mm (0.3 inches) | 51% | extreme |
| June Weather | 28°C (82°F) | 22 mm (0.9 inches) | 51% | extreme |
| July Weather | 27°C (82°F) | 34 mm (1.4 inches) | 60% | extreme |
| August Weather | 27°C (81°F) | 33 mm (1.3 inches) | 63% | extreme |
| September Weather | 24°C (75°F) | 31 mm (1.2 inches) | 74% | extreme |
| October Weather | 19°C (66°F) | 22 mm (0.9 inches) | 75% | very high |
| November Weather | 13°C (56°F) | 10 mm (0.4 inches) | 82% | high |
| December Weather | 9°C (48°F) | 15 mm (0.6 inches) | 87% | moderate |